Alan Teo

Associate Professor

  • 1008 Citations
  • 18 h-Index
20072019
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Research Output 2007 2019

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Article
2019
3 Citations (Scopus)

Development and validation of the 22-item Tarumi's Modern-Type Depression Trait Scale: Avoidance of Social Roles, Complaint, and Low Self-Esteem (TACS-22)

Kato, T. A., Katsuki, R., Kubo, H., Shimokawa, N., Sato-Kasai, M., Hayakawa, K., Kuwano, N., Umene-Nakano, W., Tateno, M., Setoyama, D., Kang, D., Watabe, M., Sakamoto, S., Teo, A. & Kanba, S., Jan 1 2019, In : Psychiatry and Clinical Neurosciences.

Research output: Contribution to journalArticle

Open Access
Self Concept
Depression
Personality
Psychometrics
Japan
1 Citation (Scopus)

Evaluation of the Safety and Design of Community Internet Resources for Veteran Suicide Prevention

Chen, J., Mastarone, G. L., Ambrosino, S. A., Anzalone, N., Carlson, K., Dobscha, S. & Teo, A., Jan 1 2019, In : Crisis.

Research output: Contribution to journalArticle

Veterans
Internet
Suicide
Safety
Mental Health
1 Citation (Scopus)

Exploring the extent of the hikikomori phenomenon on twitter: Mixed methods study of western language tweets

Pereira-Sanchez, V., Alvarez-Mon, M. A., Del Barco, A. A., Alvarez-Mon, M. & Teo, A., May 1 2019, In : Journal of medical Internet research. 21, 5, e14167.

Research output: Contribution to journalArticle

Open Access
Japan
Language
Publications
Social Media
Social Problems
2 Citations (Scopus)

Frequency of social contact in-person vs. on Facebook: An examination of associations with psychiatric symptoms in military veterans

Teo, A., Chan, B. K., Saha, S. S. & Nicolaidis, C., Jan 15 2019, In : Journal of Affective Disorders. 243, p. 375-380 6 p.

Research output: Contribution to journalArticle

Veterans
Psychiatry
Interpersonal Relations
Social Isolation
Mental Health Associations
4 Citations (Scopus)

Hikikomori : Multidimensional understanding, assessment, and future international perspectives

Kato, T. A., Kanba, S. & Teo, A., Jan 1 2019, In : Psychiatry and Clinical Neurosciences.

Research output: Contribution to journalArticle

Open Access
Internationality
Japan
Social Participation
Mental Health
History
1 Citation (Scopus)

Internet addiction, smartphone addiction, and hikikomori trait in Japanese young adult: Social isolation and social network

Tateno, M., Teo, A., Ukai, W., Kanazawa, J., Katsuki, R., Kubo, H. & Kato, T. A., Jan 1 2019, In : Frontiers in Psychiatry. 10, JULY, 455.

Research output: Contribution to journalArticle

Open Access
Social Isolation
Social Support
Internet
Young Adult
Smartphone
1 Citation (Scopus)

Smartphone addiction in Japanese college students: Usefulness of the japanese version of the smartphone addiction scale as a screening tool for a new form of internet addiction

Tateno, M., Kim, D. J., Teo, A., Skokauskas, N., Guerrero, A. P. S. & Kato, T. A., Feb 1 2019, In : Psychiatry Investigation. 16, 2, p. 115-120 6 p.

Research output: Contribution to journalArticle

Open Access
Internet
Students
Social Media
Japan
Smartphone
Veterans Health
United States Department of Veterans Affairs
Health Services
Longitudinal Studies
longitudinal study

Using facebook for qualitative research: A brief primer

Franz, D., Marsh, H. E., Chen, J. & Teo, A., Jan 1 2019, In : Journal of medical Internet research. 21, 8, e13544.

Research output: Contribution to journalArticle

Open Access
Qualitative Research
Practice Guidelines
Research
Research Personnel
Computer Security
2 Citations (Scopus)

Using Skype to Beat the Blues: Longitudinal Data from a National Representative Sample

Teo, A., Markwardt, S. & Hinton, L., Mar 1 2019, In : American Journal of Geriatric Psychiatry. 27, 3, p. 254-262 9 p.

Research output: Contribution to journalArticle

Depression
Communication
Technology
Social Media
Retirement
2018
4 Citations (Scopus)

A 12-month study of the hikikomori syndrome of social withdrawal: Clinical characterization and different subtypes proposal

Malagón-Amor, Á., Martín-López, L. M., Córcoles, D., González, A., Bellsolà, M., Teo, A., Pérez, V., Bulbena, A. & Bergé, D., Dec 1 2018, In : Psychiatry Research. 270, p. 1039-1046 8 p.

Research output: Contribution to journalArticle

Social Isolation
Anxiety
Demography
Therapeutics
Psychopathology
9 Citations (Scopus)

Blood biomarkers of Hikikomori, a severe social withdrawal syndrome

Hayakawa, K., Kato, T. A., Watabe, M., Teo, A., Horikawa, H., Kuwano, N., Shimokawa, N., Sato-Kasai, M., Kubo, H., Ohgidani, M., Sagata, N., Toda, H., Tateno, M., Shinfuku, N., Kishimoto, J. & Kanba, S., Dec 1 2018, In : Scientific Reports. 8, 1, 2884.

Research output: Contribution to journalArticle

Open Access
Personality
Biomarkers
Uric Acid
HDL Cholesterol
Psychology
6 Citations (Scopus)

Development and validation of the 25-item Hikikomori Questionnaire (HQ-25)

Teo, A., Chen, J., Kubo, H., Katsuki, R., Sato-Kasai, M., Shimokawa, N., Hayakawa, K., Umene-Nakano, W., Aikens, J. E., Kanba, S. & Kato, T. A., Oct 1 2018, In : Psychiatry and Clinical Neurosciences. 72, 10, p. 780-788 9 p.

Research output: Contribution to journalArticle

Open Access
Psychometrics
Aptitude
Socialization
Reproducibility of Results
Self Report
1 Citation (Scopus)

Help-Seeking on Facebook Versus More Traditional Sources of Help: Cross-Sectional Survey of Military Veterans

Teo, A., Marsh, H. E., Liebow, S. B. L., Chen, J., Forsberg, C. W., Nicolaidis, C., Saha, S. S. & Dobscha, S., Feb 26 2018, In : Journal of medical Internet research. 20, 2, p. e62

Research output: Contribution to journalArticle

Open Access
Social Media
Veterans
Cross-Sectional Studies
Depression
Anecdotes
14 Citations (Scopus)

Loneliness is closely associated with depression outcomes and suicidal ideation among military veterans in primary care

Teo, A., Marsh, H. E., Forsberg, C. W., Nicolaidis, C., Chen, J., Newsom, J., Saha, S. S. & Dobscha, S., Apr 1 2018, In : Journal of Affective Disorders. 230, p. 42-49 8 p.

Research output: Contribution to journalArticle

Loneliness
Suicidal Ideation
Veterans
Primary Health Care
Depression
7 Citations (Scopus)

Prevalence rate of Internet addiction among Japanese college students: Two cross-sectional studies and reconsideration of cut-off points of Young's Internet Addiction Test in Japan

Tateno, M., Teo, A., Shiraishi, M., Tayama, M., Kawanishi, C. & Kato, T. A., Sep 1 2018, In : Psychiatry and Clinical Neurosciences. 72, 9, p. 723-730 8 p.

Research output: Contribution to journalArticle

Internet
Japan
Cross-Sectional Studies
Students
Surveys and Questionnaires
4 Citations (Scopus)

Reaching those at risk for psychiatric disorders and suicidal ideation: Facebook advertisements to recruit military veterans

Teo, A., Liebow, S. B. L., Chan, B., Dobscha, S. & Graham, A. L., Jul 1 2018, In : Journal of Medical Internet Research. 20, 7, e10078.

Research output: Contribution to journalArticle

Suicidal Ideation
Veterans
Psychiatry
Mental Health
Veterans Health
2017

No-show rates when phone appointment reminders are not directly delivered

Teo, A., Forsberg, C. W., Marsh, H. E., Saha, S. S. & Dobscha, S., Nov 1 2017, In : Psychiatric Services. 68, 11, p. 1098-1100 3 p.

Research output: Contribution to journalArticle

Quality Improvement
Appointments and Schedules
Patient Participation
Postal Service
Primary Health Care
2016
7 Citations (Scopus)

Brief gatekeeper training for suicide prevention in an ethnic minority population: A controlled intervention

Teo, A., Andrea, S. B., Sakakibara, R., Motohara, S., Matthieu, M. M. & Fetters, M. D., Jul 7 2016, In : BMC Psychiatry. 16, 1, 211.

Research output: Contribution to journalArticle

Open Access
Suicide
Asian Americans
Population
Self Efficacy
Mental Health
21 Citations (Scopus)

Internet addiction and self-evaluated attention-deficit hyperactivity disorder traits among Japanese college students

Tateno, M., Teo, A., Shirasaka, T., Tayama, M., Watabe, M. & Kato, T. A., Dec 1 2016, In : Psychiatry and Clinical Neurosciences. 70, 12, p. 567-572 6 p.

Research output: Contribution to journalArticle

Open Access
Attention Deficit Disorder with Hyperactivity
Internet
Students
Self Report
Social Networking
6 Citations (Scopus)

Social Support and Health Service Use in Depressed Adults: Findings From the National Health and Nutrition Examination Survey

Andrea, S. B., Siegel, S. A. R. & Teo, A., Mar 1 2016, In : General Hospital Psychiatry. 39, p. 73-79 7 p.

Research output: Contribution to journalArticle

Nutrition Surveys
Social Work
Social Support
Health Services
Depression
2015
35 Citations (Scopus)

Does mode of contact with different types of social relationships predict depression in older adults? Evidence from a nationally representative survey

Teo, A., Choi, H., Andrea, S. B., Valenstein, M., Newsom, J. T., Dobscha, S. & Zivin, K., Oct 1 2015, In : Journal of the American Geriatrics Society. 63, 10, p. 2014-2022 9 p.

Research output: Contribution to journalArticle

Depression
Postal Service
Telephone
Logistic Models
Retirement
52 Citations (Scopus)

Identification of the hikikomori syndrome of social withdrawal: Psychosocial features and treatment preferences in four countries

Teo, A., Fetters, M. D., Stufflebam, K., Tateno, M., Balhara, Y., Choi, T. Y., Kanba, S., Mathews, C. A. & Kato, T. A., Jan 1 2015, In : International Journal of Social Psychiatry. 61, 1, p. 64-72 9 p.

Research output: Contribution to journalArticle

Loneliness
Los Angeles
Social Support
Japan
Therapeutics
10 Citations (Scopus)

Military Veterans' Experiences with Suicidal Ideation: Implications for Intervention and Prevention

Denneson, L. M., Teo, A., Ganzini, L., Helmer, D. A., Bair, M. J. & Dobscha, S., Aug 1 2015, In : Suicide and Life-Threatening Behavior. 45, 4, p. 399-414 16 p.

Research output: Contribution to journalArticle

2003-2011 Iraq War
Suicidal Ideation
Veterans
Afghan Campaign 2001-
Social Adjustment
11 Citations (Scopus)

Psychopathology associated with social withdrawal: Idiopathic and comorbid presentations

Teo, A., Stufflebam, K., Saha, S. S., Fetters, M. D., Tateno, M., Kanba, S. & Kato, T. A., Jul 30 2015, In : Psychiatry Research. 228, 1, p. 182-183 2 p.

Research output: Contribution to journalArticle

Psychopathology
6 Citations (Scopus)

Relationship between trusting behaviors and psychometrics associated with social network and depression among young generation: A pilot study

Watabe, M., Kato, T. A., Teo, A., Horikawa, H., Tateno, M., Hayakawa, K., Shimokawa, N. & Kanba, S., Apr 2 2015, In : PloS one. 10, 4, e0120183.

Research output: Contribution to journalArticle

Open Access
social networks
Psychometrics
Social Support
Psychiatry
Depression
10 Citations (Scopus)

Social networks, mental health problems, and mental health service utilization in OEF/OIF National Guard veterans

Sripada, R. K., Bohnert, A. S. B., Teo, A., Levine, D. S., Pfeiffer, P. N., Bowersox, N. W., Mizruchi, M. S., Chermack, S. T., Ganoczy, D., Walters, H. & Valenstein, M., Sep 30 2015, In : Social Psychiatry and Psychiatric Epidemiology. 50, 9, p. 1367-1378 12 p.

Research output: Contribution to journalArticle

Mental Health Services
Veterans
Social Support
Mental Health
social network
4 Citations (Scopus)

Use of a public film event to promote understanding and help seeking for social withdrawal

Teo, A., Stufflebam, K. W., Lu, F. & Fetters, M. D., Jan 1 2015, In : Asia-Pacific Psychiatry. 7, 2, p. 157-163 7 p.

Research output: Contribution to journalArticle

Mental Health
Delivery of Health Care
Surveys and Questionnaires
Therapeutics
2014
20 Citations (Scopus)

Correlates of Suicide Among Veterans Treated in Primary Care: Case–Control Study of a Nationally Representative Sample

Dobscha, S., Denneson, L. M., Kovas, A. E., Teo, A., Forsberg, C. W., Kaplan, M. S., Bossarte, R. & McFarland, B., 2014, In : Journal of General Internal Medicine. 29, 4, p. 853-860 8 p.

Research output: Contribution to journalArticle

Veterans
Suicide
Primary Health Care
Suicidal Ideation
Anxiety Disorders
2013
22 Citations (Scopus)

Comorbid social withdrawal (hikikomori) in outpatients with social anxiety disorder: Clinical characteristics and treatment response in a case series

Nagata, T., Yamada, H., Teo, A., Yoshimura, C., Nakajima, T. & Van Vliet, I., Feb 1 2013, In : International Journal of Social Psychiatry. 59, 1, p. 73-78 6 p.

Research output: Contribution to journalArticle

Outpatients
Therapeutics
Social Phobia
Obsessive-Compulsive Disorder
Proxy
8 Citations (Scopus)

How can we better manage difficult patient encounters?

Teo, A., Du, Y. B. & Escobar, J. I., Aug 1 2013, In : Journal of Family Practice. 62, 8

Research output: Contribution to journalArticle

Physician-Patient Relations
Evidence-Based Medicine
Patient Satisfaction
Mental Disorders
Primary Health Care
9 Citations (Scopus)

Psychometric properties of the Japanese version of the Social Phobia Inventory

Nagata, T., Nakajima, T., Teo, A., Yamada, H. & Yoshimura, C., Apr 1 2013, In : Psychiatry and Clinical Neurosciences. 67, 3, p. 160-166 7 p.

Research output: Contribution to journalArticle

Open Access
Psychometrics
Equipment and Supplies
Anxiety
Interpersonal Relations
Social Phobia
29 Citations (Scopus)

Social isolation associated with depression: A case report of hikikomori

Teo, A., Jun 1 2013, In : International Journal of Social Psychiatry. 59, 4, p. 339-341 3 p.

Research output: Contribution to journalArticle

Social Isolation
Depression
Cognitive Therapy
Mood Disorders
Bipolar Disorder
110 Citations (Scopus)

Social Relationships and Depression: Ten-Year Follow-Up from a Nationally Representative Study

Teo, A., Choi, H. J. & Valenstein, M., Apr 30 2013, In : PloS one. 8, 4, e62396.

Research output: Contribution to journalArticle

Open Access
Depression
Social Isolation
spouses
mental health
social networks
15 Citations (Scopus)

Using the mood disorder questionnaire and bipolar spectrum diagnostic scale to detect bipolar disorder and borderline personality disorder among eating disorder patients

Nagata, T., Yamada, H., Teo, A., Yoshimura, C., Kodama, Y. & van Vliet, I., Feb 15 2013, In : BMC Psychiatry. 13, 69.

Research output: Contribution to journalArticle

Open Access
Borderline Personality Disorder
Mood Disorders
Bipolar Disorder
Area Under Curve
Surveys and Questionnaires
2012
70 Citations (Scopus)

Does the 'hikikomori' syndrome of social withdrawal exist outside Japan? A preliminary international investigation

Kato, T. A., Tateno, M., Shinfuku, N., Fujisawa, D., Teo, A., Sartorius, N., Akiyama, T., Ishida, T., Choi, T. Y., Balhara, Y. P. S., Matsumoto, R., Wakako, U. N., Fujimura, Y., Wand, A., Chang, J. P. C., Chang, R. Y. F., Shadloo, B., Ahmed, H. U., Lerthattasilp, T. & Kanba, S., Jul 1 2012, In : Social Psychiatry and Psychiatric Epidemiology. 47, 7, p. 1061-1075 15 p.

Research output: Contribution to journalArticle

psychiatrist
withdrawal
Psychiatry
Japan
psychiatric treatment
2 Citations (Scopus)

Relief of chronic shoulder and neck pain by electro-acupuncture and transcutaneous electrical nervous stimulation: A randomized crossover trial

Yoshimizu, M., Teo, A., Ando, M., Kiyohara, K. & Kawamura, T., Jun 1 2012, In : Medical Acupuncture. 24, 2, p. 97-103 7 p.

Research output: Contribution to journalArticle

Transcutaneous Electric Nerve Stimulation
Shoulder Pain
Neck Pain
Acupuncture
Chronic Pain
13 Citations (Scopus)

The relationship between level of training and accuracy of violence risk assessment

Teo, A., Holley, S. R., Leary, M. & McNiel, D. E., Nov 1 2012, In : Psychiatric Services. 63, 11, p. 1089-1094 6 p.

Research output: Contribution to journalArticle

Violence
Psychiatry
Area Under Curve
Risk Management
County Hospitals
2011
23 Citations (Scopus)

Introducing the concept of modern depression in Japan; An international case vignette survey

Kato, T. A., Shinfuku, N., Fujisawa, D., Tateno, M., Ishida, T., Akiyama, T., Sartorius, N., Teo, A., Choi, T. Y., Wand, A. P. F., Balhara, Y. P. S., Chang, J. P. C., Chang, R. Y. F., Shadloo, B., Ahmed, H. U., Lerthattasilp, T., Umene-Nakano, W., Horikawa, H., Matsumoto, R., Kuga, H. & 2 others, Tanaka, M. & Kanba, S., Jan 1 2011, In : Journal of Affective Disorders. 135, 1-3, p. 66-76 11 p.

Research output: Contribution to journalArticle

Japan
Depression
Psychiatry
Surveys and Questionnaires
Bangladesh
37 Citations (Scopus)

The key role of a transition course in preparing medical students for internship

Teo, A., Harleman, E., O'Sullivan, P. S. & Maa, J., Jan 1 2011, In : Academic Medicine. 86, 7, p. 860-865 6 p.

Research output: Contribution to journalArticle

internship
medical student
school
medicine
stakeholder
2010
6 Citations (Scopus)

Attitudes of early-career psychiatrists in Japan toward child and adolescent psychiatry and their career decision

Tateno, M., Kato, T., Nakano, W., Teo, A., Nakagawa, A., Miyajima, K., Kanba, S., Nakamura, J. & Saito, T., Apr 1 2010, In : Psychiatry and Clinical Neurosciences. 64, 2, p. 199-201 3 p.

Research output: Contribution to journalArticle

Open Access
Adolescent Psychiatry
Child Psychiatry
Psychiatry
Japan
75 Citations (Scopus)

Hikikomori, a Japanese culture-bound syndrome of social withdrawal? A proposal for DSM-5

Teo, A. & Gaw, A. C., Jun 1 2010, In : Journal of Nervous and Mental Disease. 198, 6, p. 444-449 6 p.

Research output: Contribution to journalArticle

Psychiatry
Japan
Psychopathology
Research
Young Adult
4 Citations (Scopus)

Impact of biopsychosocial factors on psychiatric training in Japan and overseas: Are psychiatrists oriented to mind, brain, or sociocultural issues?

Kato, T. A., Tateno, M., Umene-Nakano, W., Balhara, Y. P. S., Teo, A., Fujisawa, D., Sasaki, R., Ishida, T. & Kanba, S., Oct 1 2010, In : Psychiatry and Clinical Neurosciences. 64, 5, p. 520-530 11 p.

Research output: Contribution to journalArticle

Open Access
Psychiatry
Japan
Brain
Suicide
Postal Service